Display screen or portion thereof with a graphical user interface



The present application file contains at least one drawing executed in color. Copies of this patent with color drawing(s) will be provided by the Office upon request and payment of the necessary fee.

FIG. 1 is a front view of a display screen or portion thereof with a graphical user interface according to a first embodiment; and,

FIG. 2 is a front view of a display screen or portion thereof with a graphical user interface according to a second embodiment.

The broken lines in FIGS. 1-2 show portions of a display screen or portion thereof with a graphical user interface which form no part of the claimed design. The broken text in FIGS. 1-2 is for showing environment only and forms no part of the claimed design. 

CLAIM The ornamental design for a display screen or portion thereof with a graphical user interface, as shown and described. 